One Christmas Eve I found myself in Zacatecas, Mexico, with the understanding that markets and restaurants may be closed on Christmas. I asked the owner of my hostel where to find groceries, anticipating a desperate situation, and he sent me to a local Christmas Market set up in one section of the city that was supposed to have food. Instead, I found hundreds of people in the crowded country doing last minute toy shopping. I didn't have time to find something else now, I thought, so I continued searching. I found cheap oranges. I eventually found cilantro, avocados, a few potatoes, a jalapeno, limes. I purchased them all, having no idea what I was going to make out of these items. I then found a tortilleria, and bought some fresh tortillas. On the way home I found a shop with some random Mennonite cheese. I used these items for the next few days to concoct the best potato tacos imaginable, except that I had not yet mastered using a true Mexican tortilla. There were some Mexicans in my hostel, though, so I spied a bit and watched how they cooked them, and then there I had it, the best potato tacos available, which I never would have found had I not been forced to buy only those random foods. Mmmmmmmmm.